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REY [17]
2 years ago
6

I'm completely lost. Can anyone help?

Chemistry
1 answer:
Anit [1.1K]2 years ago
6 0

Answer:

1 mole

Explanation:

The balanced equation for is given below:

2Na + 2H2O —>2NaOH + H2

Next, we shall determine the number of mole of NaOH in 40g of NaOH.

This is illustrated below:

Mass of NaOH = 40g

Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

Number of mole =Mass /Molar Mass

Number of mole NaOH = 40/40 = 1 mole

Finally, we shall determine the number of mole of Na required to produce 1 mole of NaOH ( i.e 40g).

This is illustrated below:

From the balanced equation above,

2 moles of Na reacted to produce 2 moles of NaOH.

Therefore, it will take 1 mole of Na to also produce 1 mole of NaOH.

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Answer:

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Explanation:

Hello there!

In this case, since insecticides are substances that act as poisons to get rid of insects in order to prevent their presence and/or reproduction in houses, companies, crops and others, a substance that has been widely used is the metalloid arsenic due to its direct affection of the insect's body (movement, performance, cellular functions).

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Explanation:

hope it helps ......

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